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**Simple Circuits**

We begin our study of voltage differences and emf, electric current and resistance, and various configurations of resistors in electric circuits.

Electric Current

Ohm's Law and Resistance

SCEN103 presentation of Ohm's Law and Electrical Energy

Resistivity

Simplest Possible Circuit

**Series and Parallel Circuits**

Above, we have studied the simplest possible circuit, a single emf and a single resistor. Now we examine combinations of resistors that can be reduced to an equivalent circuit involving just one equivalent resistor.

**Series Circuits**

SCEN103 presentation of Series Circuits

Concept Check: Series Circuits

**Parallel Circuits**

SCEN103 presentation of Parallel Circuits

**Series and Parallel Combinations**

Concept Check: Series and Parallel Circuits

Detailed Series/Parallel Circuit Example

Relevant Online Resources

dc Circuits
tutorial from the
Department of Physics at the
University of Guelph

Interative two-resistor circuit and
four-resistor circuit,
same source as above

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Comments, suggestions, or requests to ghw@udel.edu.

"http://www.physics.udel.edu/~watson/phys345/class/2.html"

Last updated Sept. 2, 1998.

Copyright George Watson, Univ. of Delaware, 1998.